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https://issues.apache.org/jira/browse/YARN-3139?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15513703#comment-15513703
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Tsuyoshi Ozawa commented on YARN-3139:
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[~leftnoteasy] [~jianhe] thanks for taking this issue.
{quote}
Summary:
No regression in performance, didn't see deadlock happens.
No significant performance improvement either, because existing scheduler
allocation is still in single thread.
{quote}
If the performance doesn't change, could you clarify the reason to change this?
Do you plan to make the scheduler allocation multi-threaded?
> Improve locks in AbstractYarnScheduler/CapacityScheduler/FairScheduler
> ----------------------------------------------------------------------
>
> Key: YARN-3139
> URL: https://issues.apache.org/jira/browse/YARN-3139
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: resourcemanager, scheduler
> Reporter: Wangda Tan
> Assignee: Wangda Tan
> Attachments: YARN-3139.0.patch, YARN-3139.1.patch, YARN-3139.2.patch
>
>
> Enhance locks in AbstractYarnScheduler/CapacityScheduler/FairScheduler, as
> mentioned in YARN-3091, a possible solution is using read/write lock. Other
> fine-graind locks for specific purposes / bugs should be addressed in
> separated tickets.
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